Warp-beam-shifting means



NW2, 192s. m ww A KMTTERMANN WARP BEAM SEIFTINGMEANS Filed Dec. 15, 192;? 2 Sheets-Sheet 1 naw/whoa 1,693,5K A. KATTERMANN WARP BEAM SHIFTING MEANS Filed Dec. 15, 1927 2 Sheets-Sheet 2 Patented Nov. 27, 1928.

AUGUSTEKATTERMANN, OF.PATERSO1\T, NEW JERSEY.

WARP-BEAM-SHIFTING MEANS.

Application filed December 15, 1927. Serial No. 240,287.

The invention relates to looms andmore particularly to warp beams thereof, the principal ol ject being to provide advantageous means for, alternately shifting the warp beam in a direction to decreasetension on the warp threads, and in the reverse direction, these movements of the warpbeam being synchronized with the opening and closing of the shed, so that the usual strain on the warp threads'incident to shed opening, is eliminated. Consequently, the invention decreases thread breakage and the necessity of making joinings, eliminates barre, prevents streaks due to stickingof warp tension, reduces other defects in weaving, increases production, and adds to the life of the harness and head motion by materially reducing strain thereon. V

A further object is to utilize the movement of the usual sword-carrying rock shaft in alternately moving the warp beam in the.

above mentioned directions.

A still further object is to embody the improvements above defined, in such form as to be readily attachable to the loom.

' With the foregoing in view, the invention resides in the novel subject matter hereinafter described and claimed, the description being supplemented by the accompanying drawings.

Fig. 1 is a vertical transverse section through a portion of a loom improved in accordance with my invention.

Fig. 2 is a horizontal sectional view substantially on line 22 of Fig. 1.

In the drawings above briefly described, the numeral 3 denotes the frame of a loom, provided with rearward extensions 1 which ordinarily carry bearings for the warp beam 5. For future reference, 6 denotes the conventional rock shaft of the loom, carrying the usual swords 7 which support the lay 8.

, Across the upper rear corners of the frames 4: I secure appropriate brackets 9 towhich carrying levers 10 for warp beam bearings 11. are fulcrumed between their ends, the fulcrums being indicated at 12. The bearings 11 support'the usual warp beam 5 and are disposed at one end of the levers 10. Pivoted at 13to the other end of these levers, are two vertical links 14 whose lower ends are adjustably connected at 15 to a pair of L-shaped brackets 16. Pivoted to the upper ends of these brackets at 17 are two crank 19, this rock shaft being parallel with the warp beam 5 and-being mounted in appropriate bearings 20 secured to the frame 3. A third crank arm 21 is secured to and projects downwardly from the rock shaft 19, and-a horizontal rod 22 is pivoted at one end at 23, to this arm-21, the pivot 23 being such that it may be vertically adjusted, for which purpose it maybe consideredas in the form of a shouldered bolt passing through a slot 24 in the arm 21. The other end of rod 22 is similarly connected at 25 with a fourth crank arm 26, this arm being secured to and projecting upwardly from the rock shaft 6.

The parts when arranged as above de scribed, cause raising and lowering of the warp beam 5 in synchronism with the movements of the lay 8 and the opening and closing of the shed, so that the usual strain exerted upon a warp thread 27 incident to shedopening, is prevented by slight raising of the warp beam 5, thereby overcoming difficulties heretofore encountered. As the shed closes however, the warp beam again lowers.

To assist in maintaining the warp threads at the proper tension, preventing excessive slack therein when the Warp beam 5 is lifted and preventing strain thereon when said warp beam lowers, I yieldably mount the whip roll 28. For this purpose, I provide the construction described below.

Two inverted L-shaped brackets 29 are employed, the vertical arms of these brackets being secured by fasteners 30 to the frame extensions 4, while the horizontal arms thereof (only one being shown at 31 in Fig. 1) project toward the main frame 3. On the inner end of each arm 31, is an upstanding lug 32 having an opening 33 through which one end portion of an inclined rod 34: passes slidably. Pivoted to the upper end of each bracket 29, is a whip roll hearing such as 35 of Fig. 1, the pivot being shown at 36. This bearing is also pivoted at 37 to the upper end of the rod 34 which is provided with a suitable shoulder 38 spaced from the lug 32. A coiled, C0111. pression spring 39 surrounds the rod 34 between the shoulder 38 and the lug 32 and acts to yieldably urge the whip roll bearings and the whip roll in one direction, to the limit dictated by stops on the rods, one of which is shown at 10 in Fig. 1.

Mounting of the whip rollin the manner above described, permits it to yield toward and from the main frame and produces ideal operating conditions for the warp threads, in connection with the means for vertically moving the Warp beam 5.

its excellent results are obtainable from the general construction shown and described, such construction is preferably fol:

' lowed. However within the scene of the invention as claimed, variations may be made.

I claim:

1. In a loom, \varp beam bearings, levers by one end of which said bearings are carried, links pivoted to the other end of said levers, means fulcrmning said levers between their ends, crank arms to which said links are pivoted, a rock shaft carrying said crank arms, and operating means connecting said crank arms with a positively moved part of the loom for rocking said shaft to alternately effect raising and lowering of the warp beam supporting hearings and the Warp beam.

2. In a loom, Warp beam bearings, levers by one end of which said bearings are carried, links pivoted to the other end of said levers, means fuleruming said levers between their ends, crank arms to which said links are pivoted, a rock shaft carrying said crank arms, a third crank arm on said rock shaft, an operating rod pivoted to said third crank arm, and a fourth crank arm pivoted to said rod and mounted on a positively moved rock shaft of the loom to alternately effect raising and lowering of the Warp beam supporting bearings and the warp beam.

In testimony whereof I have hereunto aflixed my signature. 7

AUGUST KATTERMANN. 

